Astreet that is 351ft long is covered in snow. city workers are using a snowplow to clear the street. the snowplow has tires that are 3.5ft in diameter. how many times does a tire have to turn in traveling the length of the street?

answer:

the probability is:

0.392

step-by-step explanation:

we are given the information of 250 employees in an organization regarding their   hair color and height.

in order to find the probability that the person is taller than 180 centimeters and has black hair we need to find the ratio of the number of people whose height is taller than 180 centimeters and has black hair to the total number of the employees.

let a denote the event that the height is taller than 180 cm.

and b denote the event that the hair are black.

and a∩b denote the event that they have height taller than 180 cm and also have black hair.

hence, we are asked   to find:

                      p(b|a)

we know that:

hence, the probability is:

0.392